Failed to compile jsp files

Hi, thanks for reading this..
Umm, I am using Eclipse IDE. I am working on some Servlets/JSP project for google app engine... but thats not the point..
I am using the code from Head first Servlets/JSP book just to test this thing up here..
While doing anything in Eclipse using JSP it just shows me error, like JSP itself is an error.
Everything works well on my local host testings, but when I want to upload it it just shows me message:

Unable to update app: Failed to compile jsp files.

See the deployment console for more details
Unable to update app: Failed to compile jsp files.

and does not want to update my application.. here is a code of my JSP: